复制一些文件到新的文件系统中
[grid@jyrac1 +asm]$ cp $ORACLE_BASE/diag/asm/+asm/+ASM1/trace/* /acfs1
[grid@jyrac1 +asm]$ cp $ORACLE_BASE/diag/asm/+asm/+ASM1/trace/* /acfs2
[grid@jyrac1 +asm]$ cp $ORACLE_BASE/diag/asm/+asm/+ASM1/trace/* /acfs3

检查使用空间
[root@jyrac1 /]# df -h /acfs?
Filesystem? ? ? ? ? ? Size? Used Avail Use% Mounted on
/dev/asm/acfs_vol1-10
? ? ? ? ? ? ? ? ? ? ? 1.0G? 105M? 920M? 11% /acfs1
/dev/asm/acfs_vol2-10
? ? ? ? ? ? ? ? ? ? ? 1.0G? 105M? 920M? 11% /acfs2
/dev/asm/acfs_vol3-10
? ? ? ? ? ? ? ? ? ? ? 1.0G? 105M? 920M? 11% /acfs3

?

现在向ACFS磁盘组添加磁盘组并监控rebalance操作
SQL> alter diskgroup ACFS add disk '/dev/raw/raw7';

Diskgroup altered.

从alert_+ASM1.log文件中可以找到ARB0进程的PID为1074
[grid@jyrac1 trace]$ tail -f alert_+ASM1.log
SQL> alter diskgroup ACFS add disk '/dev/raw/raw7'
NOTE: GroupBlock outside rolling migration privileged region
NOTE: Assigning number (4,2) to disk (/dev/raw/raw7)
NOTE: requesting all-instance membership refresh for group=4
NOTE: initializing header on grp 4 disk ACFS_0002
NOTE: requesting all-instance disk validation for group=4
Thu Jan 12 14:54:45 2017
NOTE: skipping rediscovery for group 4/0xd98640a (ACFS) on local instance.
NOTE: requesting all-instance disk validation for group=4
NOTE: skipping rediscovery for group 4/0xd98640a (ACFS) on local instance.
Thu Jan 12 14:54:45 2017
GMON updating for reconfiguration, group 4 at 249 for pid 27, osid 18644
NOTE: group 4 PST updated.
NOTE: initiating PST update: grp = 4
GMON updating group 4 at 250 for pid 27, osid 18644
NOTE: group ACFS: updated PST location: disk 0000 (PST copy 0)
NOTE: group ACFS: updated PST location: disk 0001 (PST copy 1)
NOTE: group ACFS: updated PST location: disk 0002 (PST copy 2)
NOTE: PST update grp = 4 completed successfully
NOTE: membership refresh pending for group 4/0xd98640a (ACFS)
GMON querying group 4 at 251 for pid 18, osid 5012
NOTE: cache opening disk 2 of grp 4: ACFS_0002 path:/dev/raw/raw7
GMON querying group 4 at 252 for pid 18, osid 5012
SUCCESS: refreshed membership for 4/0xd98640a (ACFS)
NOTE: starting rebalance of group 4/0xd98640a (ACFS) at power 1
SUCCESS: alter diskgroup ACFS add disk '/dev/raw/raw7'
Starting background process ARB0
Thu Jan 12 14:54:48 2017
ARB0 started with pid=40, OS id=1074
NOTE: assigning ARB0 to group 4/0xd98640a (ACFS) with 1 parallel I/O
cellip.ora not found.
NOTE: F1X0 copy 3 relocating from 65534:4294967294 to 2:2 for diskgroup 4 (ACFS)
Thu Jan 12 14:55:00 2017
NOTE: Attempting voting file refresh on diskgroup ACFS
NOTE: Refresh completed on diskgroup ACFS. No voting file found.

通过命令tail -f +ASM1_arb0_1074.trc来监控rebalance过程
*** 2017-01-12 14:55:18.731
ARB0 relocating file +ACFS.259.933075367 (86 entries)

*** 2017-01-12 14:55:38.599
ARB0 relocating file +ACFS.259.933075367 (1 entries)
ARB0 relocating file +ACFS.260.933075373 (17 entries)

*** 2017-01-12 14:55:39.617
ARB0 relocating file +ACFS.261.933075373 (86 entries)

*** 2017-01-12 14:55:59.106
ARB0 relocating file +ACFS.261.933075373 (1 entries)